Hello, I need help on this one, tried out about everything, but still no use, can't solve the following system:y² - x y - 4x = 0x² - x y + 4 y - 12 = 0I can't isolate x or y in either of the two equations for substituting in the other. So what's the trick to solve this?

y² - x y - 4x = 0x² - x y + 4 y - 12 = 0x=y²/(y+4) (didn't see that I could factor x out in the first eqn.)Substituting this in the second eqn and solving gives: 20y²-32y-192=0y=4 and y= -12/5subst. y=4 into the system gives x=2Thanks.Luke.